tv thoughts: Dollhouse - Epitaph One

So, I finally saw Epitaph One last night, the unaired episode from Dollhouse season 1. There has been lots of discussion of this episode, but I've been avoiding it to stay away from spoilers. I know that when FOX originally said they were not airing the episode, Joss commented that it wasn't really part of the series in the normal sense.

Let me explain

( spoilers under here if you are avoiding them STAY OUT! )